A Comparison of Positional Measurement Methods in Tennis

David G D Thomas

International Journal of Performance Analysis in Sport, 2015, vol. 15, issue 3, 1227-1234

Abstract: Serve bounces in the 2013 US Open Men’s Tennis final were recorded by marking on both a scale map of the court, and on still images from broadcast footage, calibrated using a Two Dimensional Direct Linear Transform (2D-DLT). Inter-operator agreement was compared for the two methods. Agreement improved for 2D-DLT when compared to the scale map approach. Both methods showed greater disagreement in the direction of image perspective than across the width of the image. Examination of the mean measured positions for the two methods revealed a systematic bias towards court markings (in the direction of perspective) when using a scale map approach, suggesting that the limits of human ability to adjust for perspective should be added to accepted sources of perceptual error in Performance Analysis when using this method.

Date: 2015
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DOI: 10.1080/24748668.2015.11868864

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